package Job02.round;

import Job02.graph.Graph;

public class Round extends Graph {
    public String perimeter(){
        String perimeter = super.perimeter();
        return perimeter.concat("圆是"+Math.PI*7*2);
    }
    public String area(){
        String area = super.area();
        return area.concat("圆是"+7*7*Math.PI);
    }
}
